septillion

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septillion

  • /sɛpˈtɪljən/

Rhymes with -ɪljən

Where it comes from

From French septillion, from sept- (“seven”) + -illion. By surface analysis, sept- + -illion.

number septillions

  1. US A trillion trillion: 1 followed by 24 zeros, 10²⁴.
  2. A billion quintillion: 1 followed by 42 zeros, 10⁴².

Similar: 1024, 1042

Thesaurus

number

Similar: 1024, 1042

Translations

Every language

num a trillion trillion, 1024 — see also quadrillion

Españolcuatrillón, septillón
日本語一秭 ichijo/isshi
Portuguêsquatrilião, quadrilião, septilhão
Françaisquatrillion
DeutschQuadrillion
Italianoquattrilione
Русскийсептиллио́н septillión

num a billion quintillion, 1042 — see also tredecillion

Españolseptillón
日本語百正 hyaku-sei
Portuguêsseptilião
DeutschSeptillion
Italianosettilione

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Cite this
MLA

"septillion." Wiktionary, via Micwyn, micwyn.com/word/septillion. Accessed 6 Nov. 2026.

APA

septillion. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/septillion

Chicago

"septillion." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/septillion.

BibTeX
@misc{septillion_2026,
  title = {septillion},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/septillion},
  urldate = {2026-11-06}
}